Limit processing by minimum image size

README.md

@@ -47,6 +47,7 @@ Powered by an intelligent adaptive algorithm, recursive operations, multiprocess
 - adaptive resize considering orientation
 - brute force to a resolution
 - optimize images to save more space
+- limit processing by minimum image size
 - convert PNG to JPEG
 - erase exif metadata
 - force smaller to larger resize
@@ -155,6 +156,7 @@ Shell completion scripts for Bash, Fish and Zsh can be found in respective subdi
       -q, --quiet           operate silently [default: verbose]
       -r, --recursive       process directories recursively [default: off]
                             symbolic links to directories are ignored
+      -s byte, --size byte  minimum size to process an image [default: 1024]
       -w, --overwrite       overwrite source images [default: off]
       -z, --debug           enable debug logs [default: off]
 

auto-completion/bash/imgp-completion.bash

@@ -12,8 +12,8 @@ _imgp () {
     local -a opts opts_with_args
     opts=(-a --adapt -c --convert -d --dot -e --eraseexif -f --force -h --help
           -i --includeimgp -k --keep -n --enlarge -o --rotate -p --optimize
-          -q --quiet -r --recurse -w --overwrite -x --res -z --debug)
-    opts_with_arg=(-o --rotate -x --res)
+          -q --quiet -r --recurse -s --size -w --overwrite -x --res -z --debug)
+    opts_with_arg=(-o --rotate -s --size -x --res)
 
     # Do not complete non option names
     [[ $cur == -* ]] || return 1

auto-completion/fish/imgp.fish

@@ -17,6 +17,7 @@ complete -c imgp -s o -l rotate   -r --description 'rotate clockwise by angle (i
 complete -c imgp -s p -l optimize    --description 'optimize the output images'
 complete -c imgp -s q -l quiet       --description 'operate silently'
 complete -c imgp -s r -l recurse     --description 'process directories recursively'
+complete -c imgp -s s -l size     -r --description 'min byte size to process an image'
 complete -c imgp -s w -l overwrite   --description 'overwrite source images'
 complete -c imgp -s x -l res      -r --description 'output resolution in HxV or %'
 complete -c imgp -s z -l debug       --description 'enable debug logs'

auto-completion/zsh/_imgp

@@ -22,6 +22,7 @@ args=(
     '(-p --optimize)'{-o,--optimize}'[optimize the output images]'
     '(-q --quiet)'{-q,--quiet}'[operate silently]'
     '(-r --recurse)'{-r,--recurse}'[process directories recursively]'
+    '(-s --size)'{-r,--size}'[min byte size to process an image]:bytes'
     '(-w --overwrite)'{-w,--overwrite}'[overwrite source images]'
     '(-x --res)'{-x,--res}'[output resolution]:HxV or %'
     '(-z --debug)'{-z,--debug}'[enable debug logs]'

imgp

@@ -41,6 +41,7 @@ enlarge = False  # enlarge images with smaller hres or vres
 optimize = False  # apply PIL library optimization when saving
 quiet = False  # suppress additional information
 recurse = False  # recursively process subdirectories
+size = 1024  # min byte size to process an image
 overwrite = False  # remove source images
 debug = False  # enable debug information
 no_res_opt = False  # --res is not specified
@@ -105,10 +106,14 @@ def traverse_dir(path):
                         lock_print(entry.path + ': no permission')
                         continue
                     traverse_dir(entry.path)
-            elif rotate is not None:
-                pool.apply_async(rotate_image, args=(entry.path,), callback=cb)
-            else:
-                pool.apply_async(resize_image, args=(entry.path,), callback=cb)
+            elif (entry.is_file(follow_symlinks=False) and
+                  entry.stat().st_size >= size):
+                if rotate is not None:
+                    pool.apply_async(rotate_image, args=(entry.path,),
+                                     callback=cb)
+                else:
+                    pool.apply_async(resize_image, args=(entry.path,),
+                                     callback=cb)
     except OSError as e:
         with lock:
             print(e)
@@ -470,6 +475,8 @@ def parse_args(args=None, namespace=None):
     addarg('-r', '--recurse', action='store_true',
            help='process directories recursively [default: off] \
                  symbolic links to directories are ignored')
+    addarg('-s', '--size', type=int, metavar='byte',
+           help='minimum size to process an image [default: 1024]')
     addarg('-w', '--overwrite', action='store_true',
            help='overwrite source images [default: off]')
     addarg('-z', '--debug', action='store_true',
@@ -488,7 +495,7 @@ def parse_args(args=None, namespace=None):
 def main():
     global HRES, VRES, scale, rotate, adapt, convert, dot, eraseexif, \
            force, includeimgp, keep, enlarge, optimize, quiet, recurse, \
-           overwrite, debug, no_res_opt, pool, init_time, count
+           size, overwrite, debug, no_res_opt, pool, init_time, count
 
     args = parse_args()
 
@@ -542,6 +549,8 @@ def main():
     optimize = args.optimize
     quiet = args.quiet
     recurse = args.recurse
+    if args.size is not None:
+        size = args.size
     overwrite = args.overwrite
     debug = args.debug
 
@@ -574,7 +583,7 @@ def main():
             print('%s processed in %.4f seconds.'
                   % (count, time.time() - init_time))
 
-        # Show number of images not ceonverted due to low resolution
+        # Show number of images not converted due to low resolution
         if count_lowres:
             print('%s not processed due to low resolution.' % count_lowres)
 

imgp.1

@@ -14,6 +14,7 @@ is a multiprocessing command line image resizer and rotator for JPEG and PNG ima
   * adaptive resize considering orientation
   * brute force to a resolution
   * optimize images to save more space
+  * limit processing by minimum image size
   * convert PNG to JPEG
   * erase exif metadata
   * force smaller to larger resize
@@ -85,6 +86,9 @@ Do not show any operational output.
 .B "-r, --recursive"
 Recursively process sub-directories. By default only the specified directory is processed. Symbolic links to directories are ignored to avoid recursive loops.
 .TP
+.B "-s, --recursive=" byte
+Minimum size in bytes required to process an image. Acts as a guard against processing low-resolution images. Default 1024 bytes.
+.TP
 .BI "-w, --overwrite"
 Overwrite the source images. By default an output image is saved with \fB_IMGP\fR appended to the source image name.
 .br